<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>变量</title>
	<script>
		// 变量：存储数据的容器
		x = '学并思';
		x = 10;
		y = 20;
		z = x+y;

		name = "学并思";
		age = 18;
		sex ="男";
		orderId = 21651651562;
		order_id = 146516514656;
		姓名 = "学并思";

		var bbb;

		bbb = 9000;

		document.write(bbb);

	</script>
</head>
<body>
	
</body>
</html>